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Unread 07-06-2010, 09:09 PM   #1
My1989Jeep
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How often do you change the TC fluid

I have had my jeep for 5 months and have not changed the transfer case fluid. Don't know if the PO changed it but how often are you suppose to change it?

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Unread 07-06-2010, 09:20 PM   #2
billabongopblue
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Not sure what the factory suggests, but i do it about every 30,000 miles. Its not hard nor expensive to do.
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Unread 07-06-2010, 09:25 PM   #3
cumminsjeep24
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I do it every year. same with trans fluid. cant hurt. There are two plugs on the back cover of the t case. both use a 10mm allen wrench. the bottom one is the drain, top is the fill. drain it out, replace plug, fill in fill hole until it comes out. it should be about 1.5 quarts of ATF
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Unread 07-06-2010, 09:56 PM   #4
Tex96
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---Be sure to loosen the FILL plug FIRST, ---

(ONLY then the drain plug).

Reports of them being difficult to remove some times.



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Unread 07-06-2010, 11:03 PM   #5
My1989Jeep
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Is there a filter or anything else that needs to be changed, or just the fluid? What fluid do I use D/M III, D/M IV??
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Unread 07-06-2010, 11:47 PM   #6
specialedbob379
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2 quarts of d/m 3 would be best, but d/m 4 would be fine. the drain/fill plug on mine was a 1-3/16" or 30mm socket.
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Unread 07-06-2010, 11:56 PM   #7
medicmandan
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I change mine when I change the tranny fluid.
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Unread 07-07-2010, 12:30 AM   #8
berg
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...and don't forget to get a pump thing to get the fluid back in. There isn't much room up there to pour in the fluid.
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Unread 07-07-2010, 10:39 AM   #9
XJH-007
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Quote:
Originally Posted by cumminsjeep24 View Post
I do it every year. same with trans fluid. cant hurt.
X2

I'm surprised by how quick the ATF gets dirty.
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Unread 07-07-2010, 10:45 AM   #10
gomes512
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Quote:
Originally Posted by XJH-007 View Post
X2

I'm surprised by how quick the ATF gets dirty.
Yep dex 3 gets chewed up pretty quick in there. 30K is the interval I use.



BTW it's Dexron 6 not 4
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Unread 07-07-2010, 10:55 AM   #11
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+1 i change mine every year too..

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Unread 07-07-2010, 12:36 PM   #12
joshrad
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So on the 231 in my '98, the fill plug is almost completely rounded out. I was able to pick up a new plug from a junkyard but I haven't attempted to take the fill plug out. When I put the allen wrench in there it fits but I'm afraid that it's going to be stuck and I'll make it worse. Does anyone have any suggestions I can try? I thought of an easy out or reverse drill bit, but I don't think that's a place I should try using either one.
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Unread 07-07-2010, 12:53 PM   #13
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If its a steel plug, weld a nut onto it and remove it with a ratchet.
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Unread 07-07-2010, 12:54 PM   #14
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I would go buy a set of star bits (torx) and find the one that's closest and POUND it in so it fits good and snug.

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Unread 07-07-2010, 02:07 PM   #15
joshrad
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Quote:
Originally Posted by XJH-007 View Post
I would go buy a set of star bits (torx) and find the one that's closest and POUND it in so it fits good and snug.

That's a good idea, I might have to try that.
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